[Switch] What is the relationship between the command cycle, machine cycle, clock cycle, and oscillation cycle?

1. The clock period is equal to the reciprocal of the single-chip crystal oscillator frequency. For example, if a common external 12 m crystal oscillator is used, the clock period is 1/12 m.
2. machine cycle: 8051 series single-chip microcomputer machine cycle = 12 * clock cycle, this is because a single clock cycle cannot do a complete task (such as taking commands, writing registers, and reading registers ), A basic operation can be basically completed in 12 clock cycles.
3. instruction cycle. A machine can complete a basic operation in a cycle, but a command usually requires a combination of multiple basic operations. The time required to complete a command is the command cycle. Of course, different commands, the command cycle is different.

[Switch] What is the relationship between the command cycle, machine cycle, clock cycle, and oscillation cycle?